Inspired by the very similar thread about school incidents.
Ya, if your line cooks and chef are not on coke then you work in a very very high end restaurant.
Like even the ones with the highest Michelin starr rating or the ones owned by world famous chefs?
Absolutely. For example, one of Gordon Ramsay’s head chefs (responsible, at least in part, for a Michelin star) famously died after using cocaine: https://www.mashed.com/492285/the-tragic-death-of-gordon-ramsays-protegee-david-dempsey/.